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Lesson: Data Sufficiency Intermeddiate - 07

Algebra In Data Sufficiency: Equations And Unknowns

[Page 7 of 21]

When a DS algebra question stem asks the value of an unknown, read the statements to find:

  • An equation that will lead to a single value
  • Multiple equations that will allow you to solve for a single value

Do the following Data Sufficiency question, choose your answer, and then click Continue.

What is the value of x - 2y ?

Statement (1) BY ITSELF is sufficient, but statement (2) by itself is not sufficient.
Statement (2) BY ITSELF is sufficient, but statement (1) by itself is not sufficient.
Both statements TAKEN TOGETHER are sufficient, but NEITHER statement BY ITSELF is sufficient.
EACH statement BY ITSELF is sufficient.
The two statements TAKEN TOGETHER are NOT sufficient.

Countinue

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